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non-blocking history lookup in notify

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Jack Robison 2020-06-15 15:56:44 -04:00
parent e6cae9bcc3
commit fc9023386c
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1 changed files with 15 additions and 24 deletions
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41
lbry/wallet/server/session.py
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@ -922,36 +922,27 @@ class LBRYElectrumX(SessionBase):
args = (await self.subscribe_headers_result(), )
if not (await self.send_notification('blockchain.headers.subscribe', args)):
return
touched = touched.intersection(self.hashX_subs)
if touched or (height_changed and self.mempool_statuses):
changed = {}
for hashX in touched:
alias = self.hashX_subs[hashX]
status = await self.address_status(hashX)
changed[alias] = status
# Check mempool hashXs - the status is a function of the
# confirmed state of other transactions. Note: we cannot
# iterate over mempool_statuses as it changes size.
for hashX in tuple(self.mempool_statuses):
# Items can be evicted whilst await-ing status; False
# ensures such hashXs are notified
old_status = self.mempool_statuses.get(hashX, False)
status = await self.address_status(hashX)
if status != old_status:
alias = self.hashX_subs[hashX]
changed[alias] = status
for alias, status in changed.items():
async def send_history_notification(alias, hashX):
if len(alias) == 64:
method = 'blockchain.scripthash.subscribe'
else:
method = 'blockchain.address.subscribe'
asyncio.create_task(self.send_notification(method, (alias, status)))
if changed:
es = '' if len(changed) == 1 else 'es'
self.logger.info(f'notified of {len(changed):,d} address{es}')
status = await self.address_status(hashX)
await self.send_notification(method, (alias, status))
touched = touched.intersection(self.hashX_subs)
if touched or (height_changed and self.mempool_statuses):
for hashX in touched:
alias = self.hashX_subs[hashX]
asyncio.create_task(send_history_notification(alias, hashX))
if touched:
es = '' if len(touched) == 1 else 'es'
self.logger.info(f'notified of {len(touched):,d} address{es}')
def get_metrics_or_placeholder_for_api(self, query_name):
""" Do not hold on to a reference to the metrics